Table 5. Incremental postprandial areas under the curve (iAUC 0–60 min) for the different plasma amino acids¹.

	Products
Amino acids	Reference	Whey	W+5AA	W+6AA	Soy	S+5AA	S+6AA
	mmol/L
Alanine	2.3±0.5c	6.8±0.6a	5.6±0.5a	4.8±0.7ab	4.5±0.4abc	3.3±0.4bc	3.2±0.4bc
Arginine	0.8±0.1c	2.2±0.2b	2.0±0.1b	5.6±0.6a	2.5±0.2b	2.6±0.2b	5.8±0.6a
Asparagine	0.4±0.1c	2.9±0.3a	1.2±0.1bc	1.5±0.3b	1.9±0.3ab	1.1±0.1bc	1.1±0.2bc
Glutamic acid	0.3±0.1ab	0.6±0.1a	0.1±0.1b	0.2±0.1ab	0.3±0.1ab	0.2±0.1b	0.2±0.1b
Glutamine	0.8±0.3c	4.0±0.6a	2.5±0.4b	1.9±0.5bc	2.1±0.4bc	1.3±0.3bc	1.3±0.3bc
Glycine	1.4±0.7a	1.6±0.3a	0.6±0.1a	0.5±0.2a	1.8±0.3a	0.5±0.1a	0.8±0.2
Histidine	0.3±0.1d	2.7±0.2a	1.4±0.1b	1.3±0.1bc	1.4±0.1b	0.8±0.1cd	0.8±0.1cd
Isoleucine	0.7±0.1e	6.3±0.4c	9.4±0.5a	8.8±0.8ab	2.5±0.1d	7.6±0.3abc	7.2±0.4bc
Leucine	1.1±0.2d	9.1±0.5b	15.6±0.8a	13.7±0.8a	3.5±0.3c	13.1±0.6b	11.2±0.8b
Lysine	1.0±0.2d	9.0±0.5b	12.2±0.6a	12.4±0.9a	3.6±0.3c	10.0±0.5b	9.6±0.6b
Methionine	0.2±0.0c	1.3±0.1a	0.7±0.0b	0.7±0.0b	0.4±0.0bc	0.4±0.0c	0.4±0.0c
Phenylalanine	0.5±0.1c	1.3±0.1a	0.8±0.0bc	0.7±0.1bc	1.2±0.1a	0.8±0.1b	0.7±0.0bc
Proline	2.1±0.4c	6.7±0.4a	4.2±0.4b	3.4±0.3bc	4.2±0.3b	2.6±0.3c	2.7±0.4c
Serine	0.7±0.1c	3.3±0.3a	2.1±0.2b	2.1±0.2b	1.9±0.2b	1.6±0.1b	1.6±0.1b
Threonine	0.8±0.1d	6.0±0.5c	8.8±0.5a	8.8±0.7ab	2.1±0.2d	7.0±0.4bc	6.6±0.5c
Tyrosine	0.4±0.2c	1.8±0.2a	0.9±0.1bc	0.9±0.2bc	1.3±0.1ab	0.8±0.1bc	0.7±0.2bc
Valine	1.2±0.3f	7.8±0.4d	13.0±0.7a	13.0±0.8ab	3.4±0.3e	10.7±0.6bc	10.6±0.6c

¹All values are mean ± SEM; n = 14 (n = 13 for Soy and S+6AA; n = 12 for W+6AA). Values in the same row with different superscript letters are significantly different, P≤0.05 (ANOVA followed by Tukey’s multiple comparisons test). S (soy protein isolate); S+5AA (S, iso, leu, lys, thr and val); S+6AA (S+5AA and arg); W (whey protein isolate); W+5AA (W, iso, leu, lys, thr and val); W+6AA (W+5AA and arg).